Comment Comment by gregschlom NPR talked about a study testing cardboard actually. Up to 24h under ideal conditions.https://www.npr.org/sections/health-shots/2020/03/14/8116090...Link to study: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v... parent gregschlom 6 years ago
https://www.npr.org/sections/health-shots/2020/03/14/8116090...
Link to study: https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v...